Vehicle-wheel



A. ELTEN, .ln.

VEHICLE WHEEL.

APPLICATION FILED IAYI. 1915;

Patented Mar. 15, 1921.

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LZZWWQM INVENTDW I \NITNESEEEH 3% A. ELTEN, JR. .VEYHICL'E WHEEL.

. PPLICATION FILED MAY 1. I915. Mar. 15

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A. ELTEN, In. VEHICLE WHEEL. APPLICATION FILED IAYI. 1915.

Patented 15, 1921 3 SHEETS-SIRE] 3. 1 29' 7 J Z ,5 r T J3 i W A; i Q3 Q m a 2% INVENTEIFV WITNESSES! fiwcaj W 52;: W

warren STATES PATENT OFFICE.

VEHICLE-WHEEL.

Specification of Letters Zatent.

Patented Mar. 15, 1921.

Application filed May 1, 1915. Serial No. 25,242.

To a?! 107mm may concern:

it known that i, ALFRED ELTEN, Jr., a

c -.n of the Unit d States, at present res at flannel, in the Province of Nest- UiaEmpire ot' Ger-many, have invented certain new and useful Improvements in Vehicle-lVh-eels; and I do hereby declare at the following is full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the acconipanying drawings. forming part of this specification.

This invention relates to resilient wheels of the class in which the stresses on the hub are yieldingly transmitted to the tire-rim. or vice versa, through carrying members and inte mediate, revoluble spacing members, thz. anslate any motion of the tire-rim in relation to the hub in the plane of the wheel, caused by such stresses, into a corresponding motion, at right angles to the plane of el, ct part of the carrying members, varying the distance between the members, against the resistance of and thereby force the carry-- with the supporting abutments f i members, against the appropr y increasing resistance or pressure of re. means. obliquely farther apart in s that, for a uniform increase ty ot hub and tire-rim, the disiing the carrying members increasing rate while the pressures increase at an increasing rate. The tilting spacing members are maintained in operative engagement with the carrying members by the two opposing pressures that act toward each other and toward the middle of the spacing members.

The object of the invention is, to provide a wheel in which the resilient resistance to the motion of the hub, relative to the tirerim due to the m's vice of the load, increases at a correspondingly increasing rate.

One embodiment of the present invention is disclosed in the structure illustrated in the accompanying drawings, in which Figure l. isa side view of a portion of a closed, unweighted wheel,

Fig. 2 is a similar View of a weighted wheel of modified form,

Fig. 3 an enlarged view of the connection of the hub with the resilient carrying mem-' bers of the wheel,

Fig. d an enlarged section on line AA of Fig. 1,

Fig. 5 an enlarged section on line B-B of Fig. 1,

Fig. 6 an enlarged section on line C-C of Fig 2,

Fig. 7 an enlarged section on line D--D i Fig. 2, and

Fig. 8 is a theoretical diagram.

The new construction consists of the hub a having projections b that engage with the serrations 0 and cl of the resilient carrying members 0 and 7 that are adjustably pressed toward the middle plane of the wheel by the bolts 9 and the rings ii and 2' and thus are immovably held on the hub.

The tire is mounted on the rim or felly consisting ofithe rings is and Z and the carrying member m, that are secured together by rivets n. The carrying member m is provided with perforations or projections 0 through or around which the mass of the tire is formed, as well as with circular grooves or runways p and g which, with the corresponding circular grooves or run* ways '2' and s on opposite parts of the resilient carrying members 6 and 7', form the supporting abutments tor the circular running edges t u, and e, to of the tilting, revolublc spacing members a and 3 As shown in Fig. 2, the resilient sides or carrying members 6 and f may be provided with perforations .2, or the like, to form spokes.

In carrying my invention into practice, I preferably arrange the spacing members cc and 'J in the form of angularly revoluble bodies, the running edges 1?, u, and o, w, or equivalent bearing parts oi which are situated in parallel, co-aXial, sectional planes of an imaginary ellipsoid of rotation, or like body. Such a spacing member may be termed a double or twin rotor whose two parallel running edges contact the runways in two opposite supporting abutments and thus support the load, at diagonally opposite places, transmitting the stresses from the runway on. one carrying member to the runway on the opposite carrying member. In the concentric condition of the wheel, these running edges rest fully in corresponding circular channels 10, q and 1, s, or equivalent bearing parts, of substantially the same diameter, that form the supporting abutments on the carrying members a, 7 and 772-, see Figs. 1, 4 and 5.

When the wheel is dynamically 0r additionally stressed and the tire-rim, in moving relative to the hub in the plane of the Wheel, becomes more or less eccentric to it, the spacing members tilt correspondingly and simultaneously assume uniformly oblique positions relative to their supports and to the planeof the wheel; so to speak, stand on edge, revolving angularly on their runn ng edges, at d1agonally opposite points, in the supporting abutments, around their 1 center of gravity, with a rolling motion when the wheel rev0lves,-see Figs. 2, 6 and 7.

V In the theoretical diagram, Fig. 8, E denotes the diagonal, or line of action, of the spacing members and 0: the angle formed by the diagonal with the plane of the wheel. F signifies the distance separating the abutments, G the weight or stress borne by the spacing members, H the resulting lateral pressure exerted by the spacing members against their supporting abutments on the carrying members and I the counterpressure' of the resisting, resilient means.

Should the spacing members, due to additional stresses, tilt from their concentric positions w and move through dili'ere'nt de grees oft eccentricity, as indicated by scale I,

to position as, then the distance F between V the supporting abutments of the spacing members increasesata decreasing rate, as indicated by scale II; or, to be more precise, the distances increase as the sine of the difierent angles formed by the diagonal E of the'spacing members with the plane of the wheel, while the corresponding pressures H increase as the tangents of these angles.

Thus

F=E sin a, and H=g tang a.

mica of the load, to be very slight when the wheel passes over slight obstacles, insuring exceedingly comfortable riding, but to e1- :t'ectively counteract violent shocks through a comparatively very great resilient resistance. In other words, the resilient resistance to shocks may increase in this wheel at a most appropriately and efi'iciently increasing rate.

What I claim as new is V A vehicle wheel comprising hub and rim portions normally substantially concentric and capable of relative eccentric movement under varying load and shock, circular se ries of opposed circular abutments carried by the hub and rim portions respectively, and tilting thrust members interposed between said seats to separate the same against resilientcresistance, said thrust members having double circular'edges whereon they tilt in the circular seats under load or shock, so as to assume uniformly oblique positions relative to their seats and to the plane of the wheel, pivoting and rolling on theirrunning edges at diagonally opposite points in the seats in like manner as the wheel revolves, the seats being thereby separated by pressures increasing at an increasing rate applied simultaneously at a plurality of points around the axis. V

In testimony whereof I have hereunto set my hand in presence of two subscribing wit nesses.

ALFRED ELTEN, JUN. [L 3. 

